I didn't ask the writer about this, but I felt that Emily's original hairstyle was a bit "weird", so I wanted to try some more options. We might keep the original one, but I wanted to know what people think first
The original one is the rightmost. The pony-tail and curly hair instead are the two tests I asked the artist to do.

It's a tough choice. I don't see anything odd in the original style and I like all the options but I'll go for option B just because there aren't that many curly girls in your games or then I haven't really been paying attention.

But... the pony tail can have... practical applications during the sex-ahem, romance CGs!!!!
Anyway I think we're going to keep the original and also the pony-tail. Since this path is a bit about "older person with younger" Emily could be wanting to look younger by changing her style later in the story